Are digital apps the secret to a greener New York City? Reinvent Green, the city’s first sustainability hackathon took place last week at NYU-Poly in Downtown Brooklyn, and demonstrated the impact tech talent can make on the city’s mission to go green. Hosted by NYC Digital and the Mayor’s Office of Long-Term Planning and Sustainability, which is responsible for implementing PlaNYC, the event called on hundreds of developers and designers to build digital tools and applications with just a 30-hour window. Read on to learn more about some of the innovative apps that were born out of this groundbreaking creative exercise.